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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Thomas J Lesjak, O.D.

Optometrist in Parker, CO · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1578690855

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Registry record

Entity type Individual (Type 1)
Name Dr. Thomas J Lesjak
Credential O.D.
Sex Male
Practice address Parker, CO, 80134
Phone (303) 841-8243
Fax (303) 841-3752
Enumeration date Feb 27, 2007
Last updated in NPPES Oct 15, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1134 (CO) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
410012223 Other CO RAILROAD MEDICARE PIN

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Thomas Lesjak practice?
The practice location on file with NPPES is in Parker, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Thomas Lesjak?
The National Provider Identifier (NPI) for Thomas Lesjak is 1578690855, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-15.